Add WEB as Resource File Type Option for Remote Links

[farazkabbo]

[Task]: Add WEB as Resource File Type Option for Remote Links

What this PR accomplishes

• Added WEB as an additional option in the Resource File Type dropdown for remote links.
• Updated get_accepted_format_options() in plugin.py to dynamically append WEB at runtime.
• Since WEB is not a MIME type or standard file type, it is not included in accepted_resource_formats.json. Instead, it is appended dynamically in the plugin to allow users to select WEB when adding resources that are remote URLs.
• Ensured that standard MIME type validation logic remains unaffected by this addition.

Issue(s) Addressed

• DATA-1765

What Needs Review

• Verify that WEB appears in the Format dropdown when adding or editing a resource.
• Select WEB for a resource with a remote URL and confirm that:
  • The selection saves correctly.
  • The selected format displays as expected after saving.
• Verify that other file format options continue to function normally.
• Confirm that MIME type validation behavior is not affected by the dynamic addition of WEB.

[aimalkhan]

Let's

1. improve the title of the PR
2. mention the ticket DATA-* it is solving like this ticket does

[aimalkhan]

@farazkabbo - can you fix the issue with the PR title?

[farazkabbo]

Done @aimalkhan